198447812 has 12 divisors (see below), whose sum is σ = 359259180. Its totient is φ = 95802336.

The previous prime is 198447793. The next prime is 198447827. The reversal of 198447812 is 218744891.

It can be written as a sum of positive squares in 2 ways, for example, as 50922496 + 147525316 = 7136^2 + 12146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855263 + ... + 855494.

It is an arithmetic number, because the mean of its divisors is an integer number (29938265).

Almost surely, 2^198447812 is an apocalyptic number.

It is an amenable number.

198447812 is a deficient number, since it is larger than the sum of its proper divisors (160811368).

198447812 is a wasteful number, since it uses less digits than its factorization.

198447812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710790 (or 1710788 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 198447812 is about 14087.1505990388. The cubic root of 198447812 is about 583.2867418207.

The spelling of 198447812 in words is "one hundred ninety-eight million, four hundred forty-seven thousand, eight hundred twelve".